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Finding the Fourth Proportional to 308,435.52, 425,159.64 and 283,690.08

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Solution

The fourth proportional to 308,435.52, 425,159.64 and 283,690.08 is: 391,049.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,435.52 : 425,159.64 = 283,690.08 : x
  2. Step 2: Convert to fraction form
    308,435.52/425,159.64 = 283,690.08/x
  3. Step 3: Cross multiply
    308,435.52x = 425,159.64 × 283,690.08
  4. Step 4: Simplify right side
    308,435.52x = 120,613,572,284.37
  5. Step 5: Solve for x
    x = 120,613,572,284.37/308,435.52
  6. Step 6: Final answer
    x = 391,049.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.